"Where do baby apes sleep? In apricots! I'm Elsa, and that's one of my jokes (I tell LOTS of jokes and I'm going to be a big star one day). I do my best to cheer my family up - but no one seems to laugh much any more. Not since we lost our lovely house and had to move into a bed and breakfast hotel."

Ten-year-old Tracy was taken into care a while ago, and now she lives in a Children's Home. She doesn't know exactly where her mum lives, but she used to have long, pretend phone calls with her. Tracy's had two foster families, but things just didn't work. She allows us to share her hopes for the future in this touching and often very funny tale.

Floss's parents are divorced, and she divides up her week, spending five days with her mum, her new step-dad and her baby half-brother. The other two days Floss spends with her dad, helping him to run his greasy spoon cafe. But their simple arrangement is thrown into disarray when Floss's mum decides to move to Australia. Making the difficult decision to stay at home, Floss moves in permanently with her dad and they muddle along happily together, surviving on chip butties and enjoying visits to the local funfair.

Hi! I'm Charlie (DON'T call me Charlotte – ever!). History is boring, right? Wrong! The Victorians weren't all deadly dull and drippy. Lottie certainly isn't. She's eleven – like me – but she's left school and has a job as a nursery maid. Her life is really hard, just work work work, but I bet she'd know what to do about my mum's awful boyfriend and his wimpy little son. I bet she wouldn't mess it all up like I do ...

Ruby and Garnet are ten-year-old twins. They're identical, and they do everything together, especially since their mother died three years earlier – but they couldn't be more different. Bossy, bouncy, funny Ruby loves to take charge, and is desperate to be a famous actress, while quiet, sensitive, academic Garnet loves nothing more than to curl up with one of her favourite books.

Is anything bothering you? Problems in class or at home? Don't know where to turn for help? Log on to the Worry Website! Type in your worry and wait for the good advice to flow in. At least that's the plan when Mr Speed sets up his super-cool new Worry Website for the class. Holly, Greg, Natasha and the rest feel that they've got shed loads of worries but, as they find out, sometimes the best advice comes from the most unexpected place.

Em adores her funny, glamorous dad – who cares if he's not her real father? He's wonderful to her, and to her little brother Maxie and sister Vita. True to form at Christmas, Dad gives them fantastic presents, including a real emerald ring for his little Princess Em.Unfortunately he's got another surprise in store – he's leaving them. Will Dad's well-meaning but chaotic attempts to keep seeing Em and the other children help the family come to terms with this new crisis?

When Stella is dumped at summer camp while her mum goes off on a posh honeymoon, things start badly. In the first few minutes she's mistaken for a boy and put in a room with snobby Louise and nasty Karen. Then she finds out she'll have to take dreaded swimming lessons, the one thing mum promised she wouldn't have to do. Can things get any worse?

London, 1876. Hetty Feather is just a tiny baby when her mother leaves her at the Foundling Hospital. The Hospital cares for abandoned children - but Hetty must live with a foster family until she is big enough to go to school. Life in the countryside is hard but she has 'brothers' Jem and Gideon to play with, and together they sneak off to visit the travelling circus. Hetty is mesmerised by the show, especially Madame Adeline and her performing horses.

Dolphin adores her mother, Marigold. She's got wonderful clothes, bright hair and vivid tattoos all over her body – a colourful lady, to match her colourful life. But Dolphin's older sister, Star, is beginning to wonder if living with Marigold's fiery, unpredictable moods is the best thing for the girls.

From climbing and abseiling to canoeing and a Crazy Bucket Race, an adventure holiday promises to be full of action. There's just one problem as far as Tim is concerned: he is hopeless at sports of any kind.

Gemma and Alice were born on the same day and have been devoted best friends ever since. Despite Gemma's larger-than-life personality and Alice's quieter, calmer character, the two are inseparable – until Alice has to move house, all the way to Scotland. Gemma is utterly distraught, particularly at the thought that Alice might find a new best friend. Is there anything Gem's brothers, or perhaps her Grand dad, can do to help?

It is the school holidays and Rebecca, Sarah, and Mandy are in the park. Rebecca always thought that Sarah was her best friend, but now Sarah seems to prefer Mandy, who thinks Rebecca's a baby. When Rebecca wades into the witch's pond she is left alone, but not for long. She meets a very unusual new friend: a huge, warty toad! Glubbslyme is no ordinary toad. Hundreds of years old, he can talk and, best of all, he can work magic.

It’s 1953, the year Elizabeth is to be crowned Queen of England. Elsie Kettle can't wait to go to London to see the celebrations on Coronation Day. Elsie lives with her Nan – her mum works as a showgirl, so she's not around very often. Spirited and imaginative, but often lonely, Elsie longs for a best friend. Luckily, she and Nan are very close; Elsie just wishes she was allowed a cat to keep her company sometimes.

Being a sister isn't always easy ... but what's the very worst thing about your sister? Marty and her sister Melissa couldn't be more different. Marty loves her Converse trainers, playing football, hiding in her secret den and helping her dad with his DIY. But Melissa loves Justin Bieber and all things pink, girly and pretty. The sisters can manage to live together, despite their occasional scraps but then Mum tells them they have to share a room.